Not-Set-in-Stone Wall
This wall shakes things up a bit by placing the stone vertically, horizontally, in different sizes, with pieces jutting out from the surface, etc. Besides providing privacy, the wall is waaay more interesting to look at than a plain wall made of concrete, brick, or even perfectly placed stone. With a wall like this, you wouldn't be in such a hurry to cover it up with trees and shrubs. Photographed at the Huntington Botanical Gardens in San Marino, CA.